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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

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OpenSSH Channel Code Off by 1

Vulnerability Assessment Summary Checks for the remote OpenSSH version Detailed Explanation for this Vulnerability Assessment You are running a version of OpenSSH which is older than 3.1. Versions prior than 3.1 are vulnerable to an off by one error that permits local users to gain root access, and it may be possible for remote users to similarly compromise the daemon for remote access. In addition, a vulnerable SSH client may be compromised by connecting to a malicious SSH daemon that exploits this vulnerability in the client code, thus compromising the client system. Solution : Upgrade to OpenSSH 3.1 or apply the patch for prior versions. (See: http://www.openssh.org) Network Security Threat Level: High Networks Security ID: 4241 Vulnerability Assessment Copyright: This script is Copyright (c) 2002 Thomas Reinke

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